Jacksonville area, Florida
Castillo de San Marcos National Monument
National Park Service unit in Florida
Park Free to visit
Park alerts right now
ClosureConstruction for Seawall Project
Starting July 27, 2026, Castillo de San Marcos National Monument will begin construction to replace, raise and rehabilitate the park’s failing seawalls. The historic fort will remain accessible throughout the project. Some areas outside of the fort will be closed for safety.
InfoFee Stations Credit Card Only
Fee Stations are only accepting credit cards for the purchase of entry tickets and passes.
From the National Park Service, updated nightly.
